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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Shedding light on ethylene metabolism in higher plants

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Author(s):
Rodrigues, Maria A. [1] ; Bianchetti, Ricardo E. [1] ; Freschi, Luciano [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Dept Bot, Inst Biosci, Lab Plant Physiol, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Review article
Source: FRONTIERS IN PLANT SCIENCE; v. 5, DEC 1 2014.
Web of Science Citations: 16
Abstract

Ethylene metabolism in higher plants is regulated by a wide array of endogenous and environmental factors. During most physiological processes, ethylene levels are mainly determined by a strict control of the rate-limiting biosynthetic steps responsible for the production of 1-aminocyclopropane-1-carboxylic acid (ACC) and its subsequent conversion to ethylene. Responsible for these reactions, the key enzymes ACC synthase and ACC oxidase are encoded by multigene families formed by members that can be differentially regulated at the transcription and post-translational levels by specific developmental and environmental signals. Among the wide variety of environmental cues controlling plant ethylene production, light quality, duration, and intensity have consistently been demonstrated to influence the metabolism of this plant hormone in diverse plant tissues, organs, and species. Although still not completely elucidated, the mechanisms underlying the interaction between light signal transduction and ethylene evolution appears to involve a complex network that includes central transcription factors connecting multiple signaling pathways, which can be reciprocally modulated by ethylene itself, other phytohormones, and specific light wavelengths. Accumulating evidence has indicated particular photoreceptors as essential mediators in light-induced signaling cascades affecting ethylene levels. Therefore, this review specifically focuses on discussing the current knowledge of the potential molecular mechanisms implicated in the light-induced responses affecting ethylene metabolism during the regulation of developmental and metabolic plant responses. Besides presenting the state of the art in this research field, some overlooked mechanisms and future directions to elucidate the exact nature of the light-ethylene interplay in higher plants will also be compiled and discussed. (AU)

FAPESP's process: 13/18056-2 - Interaction between light, hormonal and nitric oxide signaling during plastidial biogenesis and differentiation and nutraceutical compounds accumulation in tomato fruits
Grantee:Luciano Freschi
Support Opportunities: Regular Research Grants